Seat or stool.



W. GROENENDYKE.

SEAT OR STOOL. APPLIOATION FILED JUNE 11, 1912.

1,060,838. 7 Patented May 6, 1913.

2 S HEBTS-SHEET l.

WITNESSES g W. GROENENDYKE.

SEAT 0R STOOL.

APPLICATION FILED JUNE 11, 1912.

1,060,838. Patented May 6, 1913.

2 SHEETS-SHEET 2 9 ill/MENTOR,

WITNESSES w u, I I 7/ #Qllz'ammenenaQfig I b r I Z nmmwn co umml PLANOGRAFH COqWASNXNUTO ILC.

UNITED STATES TENT OFFIGE.

WILLIAM GROENENDYKE, OF PASSAIC, NEW JERSEY, ASSIGNOR OF ONE-HALF TO JOHN GROENENDYKE, 0E PASSAIC, NEW JERSEY.

SEAT 0R STOOL.

Application filed June 11, 1912.

To aZZ whom 2'23 may concern.

Be it known that I, lVILLIAM. GROENEN- DYKE, a citizen of the United States, residing at Passaic, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Seats or Stools, of which the following is aspecification.

This invention relates to stools or seats and it consists in certain improvements in an article of manufacture of this character whereby the seat proper may travel sidewise in a suitable frame or support, the whole structure being of such character as to produce a seating appliance which, while efficiently serving its intended purpose of allowing the occupant free sidewise movement at a piano, table, desk or the like, will be durable, substantial and simple in construction and attractive in appearance.

In the accompanying drawing, Figure 1 is a front elevation of the improved stool or seat; Fig. 2 is a vertical sectional view; Fig. 3 is a plan view of the support; Figs. 4 to 6 are detail views of one of the parts of said frame or support; and, Figs. 7 to 9 are detail views of the sliding carriage.

The support or frame has four legs suitably braced and connected by a pair of rails on which slides the carriage aforesaid. This frame is constructed as follows: The legs a are arranged in two pairs, thelegs in each pair converging upwardly in the end elevation of the frame, and the pairs converging upwardly in the front elevation. A spindle b may connect each two adjoining legs near their lower ends, and if desired a tie rod 0 may be employed, connecting the legs near their lower ends to insure against their spreading. Each pair of legs have their upper ends fitted into a twin socket member (Z consisting of a casting including an upper or body portion 6, having vertical front and rear faces f, and the converging lower socket portions 9 whose angular relation to each other conforms with the angular disposition of the legs, which said sockets 9 directly receive. In order to retain the legs in the sockets 9 bolts or screws it may be employed, as shown in Fig. 1, the same being passed through said sockets and the received parts of the legs.

Against the flat faces f f of the body part e of each twin socket are secured, by screws 27, the parallel rails j. To give stability to the Specification of Letters Patent.

Patented May 6,1913.

Serial No. 702,995.

joints between the rails and each twin socket, at least two screws i are employed at each end of each rail, and the rails are made to bear on the ledges 7a which are formed above each socket g by making the body part 0- of the twin socket somewhat narrower than the combined widths of the two sockets g at their upper surface. Each rail j has a longitudinal groove 7" cut in its top surface and eX- tending from substantially end to end thereof; in its inner lower edge it has a similar groove Z.

Arranged to slide on the rails 7' is the carriage m. This carriage consists in the present instance of a block provided with the grooves 12 at ,the front and back thereof, said grooves receiving the rails j. The block has a vertically threaded bore 0 which receives the threaded stem 79 of the revolving seat proper g; by turning the seat proper it may be adjusted up or down in the wellknown manner.

To reduce the friction between the carriage and rails j I provide series of balls r arranged to travel with the carriage in the groove is and Z of the rails. Each upper series of balls is arranged in a groove race 8 formed in the under face of each of the upper flanges t of the carriage; each lower series of balls is arranged in a race at which is formed between the upper face of each lower flange o of the carriage and the adjacent side face of the latter, the latter race being cross-sectionally curved to fit the-balls, as seen in Fig. 2. To retain the series of balls assembled with the carriage I provide the strips to which are secured to the ends of the carriage by screws 00 in such way that each strip closes the ends of two races; the carriage is preferably recessed to receive these strips, so that the end faces of the carriage and the corresponding faces of the strips are flush (see Fig. 9).

The improved construction allows the person seated on the stool to move sidewise with perfect freedom in various operations requiring such movement, as in playing a piano or at a table, etc. The construction is further strong and durable and at the same time is in point of appearance an attractive article of furniture.

The antifriction bearings make lubricating unnecessary, a feature of material advantage in an article of furniture of this character. The upper series of balls are designed to assume the direct weight of the occupant; the lower series are so disposed that they directly assume the pressure of the carriage produced by its tendency to tilt: thus, the left hand series in Fig. 2 directly assume this pressure when the occupant faces to the right in said figure.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is The combination, with the seat, of a carriage sustaining the seat and consisting of a substantially rectangular block having on each of two opposite sides thereof parallel horizontal upper and lower flanges forming a horizontal groove in the block, one on each of said sides thereof, a frame supporting said block and including spaced flathoriing laterally, each rail conforming in cross i sectional dimension and form to the cross sectional dimension and form of the corresponding groove, an upper set of anti-friction bearing means arranged between each rail and the corresponding upper flange of the block, and a lower set of anti-friction bearing means arranged between a laterally facing surface of the block and each rail, substantially as described.

In testimony whereof I afiix my signature in presence of two Witnesses.

WILLIAM GROENENDYKE. Witnesses JOHN V. STEWARD, WM. D. BELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, I). G. 

